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l2cap: Fix double disconnect issue

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It might happen that we get into situation that host will try to
disconnect same channel couple times e.g when receiveing many
corrupted packets.

This patch make sure that host will send l2cap disconnect command only
once.
This commit is contained in:
Łukasz Rymanowski
2021-03-24 14:41:11 +01:00
committed by Szymon Janc
parent 75c745dbc8
commit 089f0d849a
2 changed files with 9 additions and 0 deletions
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nimble/host/src/ble_l2cap_priv.h
+1
View File
@@ -105,6 +105,7 @@ typedef int ble_l2cap_tx_fn(struct ble_hs_conn *conn,
struct ble_l2cap_chan *chan);
#define BLE_L2CAP_CHAN_F_TXED_MTU 0x01 /* We have sent our MTU. */
#define BLE_L2CAP_CHAN_F_DISCONNECTING 0x02 /* We have sent L2CAP Disconnect. */
SLIST_HEAD(ble_l2cap_chan_list, ble_l2cap_chan);
nimble/host/src/ble_l2cap_sig.c
+8
View File
@@ -1640,6 +1640,10 @@ ble_l2cap_sig_disconnect(struct ble_l2cap_chan *chan)
struct ble_l2cap_sig_proc *proc;
int rc;
if (chan->flags & BLE_L2CAP_CHAN_F_DISCONNECTING) {
return 0;
}
proc = ble_l2cap_sig_proc_alloc();
if (proc == NULL) {
return BLE_HS_ENOMEM;
@@ -1661,6 +1665,10 @@ ble_l2cap_sig_disconnect(struct ble_l2cap_chan *chan)
req->scid = htole16(chan->scid);
rc = ble_l2cap_sig_tx(proc->conn_handle, txom);
/* Mark channel as disconnecting */
if (rc == 0) {
chan->flags |= BLE_L2CAP_CHAN_F_DISCONNECTING;
}
done:
ble_l2cap_sig_process_status(proc, rc);